[Eslam93]

Why

The project is now FigureMatch: the GitHub repo was renamed to Eslam93/FigureMatch, and old MagnaCMS URLs redirect. This PR removes the old name from everything in the current tree. Git history stays as it is.

What changed

• Docs: README, ARCHITECTURE, DEVLOG, the frontend and infra READMEs, and DEPLOY.md now use the new name, and their links point at Eslam93/FigureMatch.
• README header: it now opens with a note that the project is being rebuilt into a bilingual Arabic/English figure checker. The rest of the README still describes the current studio.
• App: page titles, the landing page, the sidebar, the global error page, and the backend's app_name.
• Packages: figurematch-backend, figurematch-frontend and figurematch-infra, with lockfiles updated to match.
• Infra: CDK stack and resource names are now figurematch-${env}-*, and infra/bin/magnacms.ts becomes figurematch.ts. The AWS stacks are already torn down, so nothing deployed is affected.
• Local dev: docker-compose container names, the seed user and brand voice, and the mock email sign-off.
• Tests: the "prompts never name the app" test now looks for figurematch.

Verification

• Backend: ruff, mypy, uv lock --check and pytest all pass (525 passed).
• Frontend: typecheck, lint and vitest all pass (48 tests).
• Infra: tsc and jest pass: 64 tests and 5 snapshots, with no snapshot updates needed beyond the renamed strings.
• git grep -i magna finds nothing.

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